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Calculate the counts s-1 which should be observed by a detector of 2 cm2 area placed 300 cm from a sample of l2 containing 2 millicuries of 128l.
What is the pH of a 25.00 mL solution of 0.10 M CH3CO2H? What are the concentrations of OH- and CH3CO2? Ka = 1.8 x 10^-5
How many moles of CF4 can be produced when 5.00 mol C react with 8.00 mol F2?
A calibration is performed with a standard solution of iron in water. Aniron solution in methyl ethyl ketone is analysed based on this calibrationfunction. Is it likely to yield an accurate result? or would the result be toohigh or too low? Explai..
Calculate the [Zn2+] in a solution of ZnC2O4 held at a pH of 3.00. Remember C2O4^2- is a weak base so you must consider other equilibria.
when an irregularly shaped chunk of silicon weighing 8.763 g was placed in a graduated cylinder containing 25.00 mL of water, the water level in the cylinder rose to 28.76 mL. What is the density of silicon in g/cm3?
Use the Beer-Lambert Law to calculate concentration given the following information
Calculate the mass of silver chloride required to plate 245 mg of pure silver. Silver chloride, often used in silver plating, contains 75.27% Ag
What is the specific heat for the metal if It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13. Degree Celsius to 24.3 degree celsius?
A 26.0-g sample of ice at -10.0°C is mixed with 114.0 g of water at 72.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Drawa a fat (oil) molecule representing corn oil. The fatty side chains that you need to include are two of the esters group derived from oleic acid and one from the linoleic acid. Draw the structure of this oil clearly with appropriate double bon..
Sodium bicarbonate decomposes to form the final solid product sodium oxide. Using a balanced equation, you are to convert the grams of sodium bicarbonate, one number is 5.213, to moles.
Based on the solubility rules, which one of these is insoluble in water?
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